"In my latest demo session, Nintendo laid out a big surprise -- Luigi's Mansion: Dark Moon has a full-blown multiplayer -- and it has local, download, and online play! In multiplayer, one to four different versions of Luigi climb the "scarescraper," a tower of semi-randomly generated room sets."
Nice article there. Multiplayer sounds pretty fun, kinda wish they had other characters rather than just other colored Luigis. But that could be redeemed by making a humorous excuse for there being more than one Luigi.